The measurement made by the UE for OTDOA positioning is the Reference Signal Time Difference (RSTD) measurement. The RSTD is the relative timing difference between two cells4 – the reference cell and a measured neighboring cell. The RSTD measurement is possible on an intra-frequency cell and on an inter-frequency cell. !

Positioning support in LTE was introduced in the second release, Rel. 9, in 2009, and improvements have been made in later releases. With today’s technology, the User Equipment (UE) position is determined based on a combination of cell identity, OTDOA and A-GNSS information from the UE.

The e-cid technique improves this estimate by using measurements such as Round Trip Time (rtt) and Angle of Arrival (aoa). If many bss are in range, otdoa can give a position from combined Reference Signal Time Diﬀerence (rstd) mea-surements. In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their relative downlink timing. Positioning support in LTE was introduced in the second release, Rel. 9, in 2009, and improvements have been made in later releases. With today’s technology, the User Equipment (UE) position is determined based on a combination of cell identity, OTDOA and A-GNSS information from the UE. Observed time difference of arrival (OTDOA) is a downlink based positioning method described by 3GPP as one of the NB-IoT positioning methods to increase positioning accuracy. It utilizes neighbor cells to derive an observed time difference of arrival (ToA) relative to the serving cell.

For the multiple OTDOA based positioning, several weighted average method can be utilized by applying equal gain weighting or received power of signals. 3 Feb 2015 (SDR) receiver is developed for OTDoA positioning in LTE. A preliminary scenario with four synchronized base stations is used to validate the for OTDOA. 36.133 · 0433, RSTD Measurement Requirements for OTDOA 36.133 · 0726, Requirements for reporting criteria with positioning measurements . 6 Jun 2014 UE assisted positioning: the UE provides position measurements to the location server. (RSTD measurements in case of OTDOA) for computation 11 Sep 2020 Both OTDOA and joint AOA-ranging methods require accurate time delay estimation of 5G signals to improve positioning performance.

terminal-assisted positioning. To enhance positioning accuracy for all types of environment, LTE uses complementary positioning methods.

OTDOA is a suitable positioning method candidate as it is based on broadcast signals and so enables good scalability which is required for massive IoT scenarios. Considering the different use cases, radio environments, device capabilities and supported bandwidths, NB-IoT and feMTC could properly support the positioning requirements.

In this context, we have developed a new positioning approach called Adaptive Observed Time Difference of Arrival (A-OTDOA) which is compatible with both 3G and 4G user equipment and respond to the emergency calls accuracy criteria. (OTDOA) is a downlink based positioning method de-scribed by 3GPP as one of the NB-IoT positioning methods to increase positioning accuracy. It utilizes neighbor cells to derive an observed time difference of arrival (ToA) rela-tive to the serving cell.

2020-04-01

Reference signals in LTE do not convey any higher layer information, existing only at the physical layer. The use of specific positioning-purpose signals in LTE OTDOA improves its availability and precision. Positioning capabilities were introduced to 5G network standards in 3GPP R16, which was frozen around the middle of 2020. In addition to traditional positioning technologies such as E-CID, OTDOA, and UTDOA, 5G positioning makes use of 5G wide spectrum and multi-beam characteristics to support terminal-assisted positioning.

3GPP are supporting two stand-alone TDOA positioning methods (downlink and uplink) in the LTE speciﬁcation. The downlink TDOA positioning method in LTE, known as observed time-difference-of-arrival (OTDOA), measures the differences in arrival times of downlink signals from multiple 1 ETSI 3GPP TS 37.355 version 15.0.0 Release 15 1 ETSI TS 137 355 V15.0.0 (2020-01) Reference DTS/TSGR-0237355vf00 Keywords 5G,LTE ETSI 650 Route des Lucioles ETSI 3GPP TS 37.355 version 16.1.0 Release 16 1 ETSI TS 137 355 V16.1.0 (2020-07) Reference RTS/TSGR-0237355vg10 Keywords 5G,LTE ETSI 650 Route des Lucioles PDF | In this paper we investigate the positioning accuracy of user equipment ( UE) with observed time difference of arrival (OTDoA) technique in Long | Find The OTDOA technology is based on measurement of reference signal time difference (RSTD) from different base stations. The location of a UE can be obtained OTDOA Positioning . 38. 6.5.1.2. OTDOA Assistance Data Elements .
Ali bakhshandeh

Depending on which positioning mode is configured, either UE based or UE assisted, the OTDOA (Observed Time Difference of Arrival) † UE location can be tri-laterated with the knowledge of three or more eNB’s –Transmit timings of the cells in the system and their geographical locations –Received time difference of at least two other cells vs.

In this paper we investigate the positioning accuracy of user equipment (UE) with observed time difference of arrival (OTDoA) technique in Long Term Evolution (LTE) networks using dedicated Cell ID based positioning + Enhancements † Server knows the geographical locations of the cells † Timing Advance can be used to find the UE’s distance from the eNB antenna † Neighbor cell measurements etc. can be used to increase the accuracy LTE Positioning Methods- overview 3GPP Release 9 OTDOA (Observed Time Difference of Arrival) Performance of OTDOA positioning in narrowband IoT systems Abstract: Narrowband Internet of Things (NB-IoT) is an emerging cellular technology designed to target low-cost devices, high coverage, long device battery life (more than ten years), and massive capacity. Article Abstract.
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Release-15 NR provides support for RAT-independent positioning techniques and Observed Time Difference Of Arrival (OTDOA) on LTE carriers. Release 16 extends NR to provide native positioning support by introducing RAT-dependent positioning schemes.

10 CM Accurate Ultra-wide Band (UWB) Positioning for Arduino, Python and Raspberry Pi Projects: the Easiest Way. : Performance you can expect from this project:The video below is slightly older. Since, Pozyx has managed to increase the update rate for two-way ranging to 140 hertz and for TDOA to 400 - 1000 hertz. But this is still one of my favorite videos as it… positioning accuracy. 3GPP are supporting two stand-alone TDOA positioning methods (downlink and uplink) in the LTE speciﬁcation. The downlink TDOA positioning method in LTE, known as observed time-difference-of-arrival (OTDOA), measures the differences in arrival times of downlink signals from multiple 1 ETSI 3GPP TS 37.355 version 15.0.0 Release 15 1 ETSI TS 137 355 V15.0.0 (2020-01) Reference DTS/TSGR-0237355vf00 Keywords 5G,LTE ETSI 650 Route des Lucioles ETSI 3GPP TS 37.355 version 16.1.0 Release 16 1 ETSI TS 137 355 V16.1.0 (2020-07) Reference RTS/TSGR-0237355vg10 Keywords 5G,LTE ETSI 650 Route des Lucioles PDF | In this paper we investigate the positioning accuracy of user equipment ( UE) with observed time difference of arrival (OTDoA) technique in Long | Find The OTDOA technology is based on measurement of reference signal time difference (RSTD) from different base stations. The location of a UE can be obtained OTDOA Positioning . 38.

of arrival (OTDOA) based positioning for Narrowband Internet of Things (NB-IoT), which will be integrated as a part of the 3rd Generation Partnership Project (3GPP) Long ermT Evolution TE) release 14. ARM Cordio-N IP for NB-IoT will provide the wide area and low power connectivity required for …

. 2. hellaPHY OTDOA RSTD measurements and position estimation is tightly coupled and optimized for performance and energy conservation; and 3. the hellaPHY OTDOA protocol is much lighter than the standard LPP/SUPL protocol [2, 3] With standard OTDOA uplink RSTD transmissions shortens UE battery life and adds congestion to the network. 2017-05-09 · In this context, we have developed a new positioning approach called Adaptive Observed Time Difference of Arrival (A-OTDOA) which is compatible with both 3G and 4G user equipment and respond to the emergency calls accuracy criteria. LTE Positioning Protocol (LPP) (3GPP TS 36.355 version 10.0.0 Release 10) 3GPP TS 36.355 version 10.0.0 Release 10 ETSI 6.5.1 OTDOA Positioning Deep Learning based OTDOA Positioning for NB-IoT Communication Systems Guangjin Pan, Tao Wang, Xiufeng Jiang, Shunqing Zhang guangjin_pan@shu.edu.cn, twang@shu.edu.cn, XiufengJiang@shu.edu.cn Shanghai Institute for Advanced Communication and Data Science, Key laboratory of Specialty Fiber Optics and Optical Access Networks, PRS Muting Pattern Assignment to Optimize RSTD Measurement Acquisition for OTDOA Positioning in 3GPP LTE. Ramya Srinivasan, Grant A. Marshall, Guttorm R. Opshaug, Borislav Ristic, Kirk A. Burroughs, Sven Fischer, Shuping Zhang, Daniel Henriksson A, François Cardinal Multiple OTDOA positioning is one of the multi-node based methods that averages multiple results from OTDOA; however, it cannot always guarantee high accuracy due to the non-uniform geometry of UEs. OTDOA positioning based on TSE (Taylor Series Expansion) algorithm may be one of the solutions; however, it has the initial value problem and high computational complexity due to its iterative High precision UE position estimates derived by OTDOA positioning in an LTE network are provided to other networks (e.g., WCDMA and/or GSM), along with inter-RAT measurements performed on the other networks, to support fingerprinted positioning databases in the other networks. OTDOA positioning scheme can avoid the interference in heterogeneous LTE-Advanced systems and greatly improve the positioning accuracy.

The OTDOA positioning method makes use of the measured timing of downlink signals received from multiple TPs, comprising eNBs, ng-eNBs and PRS-only TPs, at the UE. The UE measures the timing of the received signals using assistance data received from the positioning server, and the resulting measurements are used to locate the UE in relation to the neighbouring TPs. Observed Time Difference Of Arrival (OTDOA) is a downlink positioning method in LTE. OTDOA is a multilateration method in which a UE (user equipment) measures the time of arrival (TOA) of signals received from multiple base stations (Evolved Node Bs (eNBs)) and computes a reference signal time difference (RSTD) that is reported to the network. 3GPP (the Third Generation Partnership Project) defines OTDOA by using the Positioning Reference Signal (PRS). In the adopted Observed Time Difference of Arrival (OTDOA) algorithm the base stations transmit so-called Positioning Reference Signals (PRS). The User Equipment (UE) detects the time difference of arrival of the PRS for pairs of base stations. In this context, we have developed a new positioning approach called Adaptive Observed Time Difference of Arrival (A-OTDOA) which is compatible with both 3G and 4G user equipment and respond to the emergency calls accuracy criteria. (OTDOA) is a downlink based positioning method de-scribed by 3GPP as one of the NB-IoT positioning methods to increase positioning accuracy. It utilizes neighbor cells to derive an observed time difference of arrival (ToA) rela-tive to the serving cell.